Fix

What it does

When your agent uses it

• Tasks that involve Linting and formatting
• Tasks that involve Debugging

Example prompts

• “Use the fix skill to apply targeted fix to known bug/lint error, verifies with same command that surfaced it”
• “/fix”

Requirements

• Python 3
• Node.js
• Pre-approved tools (allowed-tools): Bash, Read, Edit, Grep

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

1. 1Analyze: Run validation to get the exact error message.
2. 2Diagnose: Analyze error.log.
3. 3Patch: Apply a fix.
4. 4Verify: Run validation again.

What it can do on your machine

Read from SKILL.md and the folder at commit d64db2b. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Bash
  • Read
  • Edit
  • Grep

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Ships 1 file in scripts/ (Python), which the agent can run.

  Shell commands in SKILL.md call:

  • npm
  • ruff
  • python3
  • mypy
  • npx
  • eslint

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use npm and npx, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Fix loads about 1.1k tokens when it runs. Until then it costs about 38 tokens; SKILL.md has 497 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~38

When it runs · the whole SKILL.md, loaded when a task matches

~1.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NotePre-approves every shell command (allowed-tools: Bash)SKILL.md

  allowed-tools: Bash, Read, Edit, Grep

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from softspark/ai-toolkit at commit d64db2b, republished under its Apache-2.0 licence (© softspark). 497 words, ~1,115 tokens.

name

fix

description

Applies targeted fix to known bug/lint error, verifies with same command that surfaced it. Triggers: fix, apply fix, fix bug, fix lint, targeted fix.

allowed-tools

Bash, Read, Edit, Grep

effort

low

disable-model-invocation

true

argument-hint

[test or lint target]

/fix <file_or_scope>
# Example: /fix src/utils.ts

# Pipe lint or test output
ruff check . 2>&1 | python3 ${CLAUDE_SKILL_DIR}/scripts/error-classifier.py
mypy src/ 2>&1 | python3 ${CLAUDE_SKILL_DIR}/scripts/error-classifier.py
npx eslint . 2>&1 | python3 ${CLAUDE_SKILL_DIR}/scripts/error-classifier.py

User: /fix app.py
Agent: Running tests... FAIL (NameError)
Agent: Fixing app.py (Import missing module)
Agent: Running tests... PASS
Agent: Fixed NameError in app.py

© softspark, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (scripts) in app/skills/fix of softspark/ai-toolkit.

• SKILL.md
• scripts/error-classifier.py

Open the folder on GitHubat commit d64db2b